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(No Model.)

G. MQBROWN.

NOISE DEADENING INSULATOR.

No. 268,075. Patented Nov. 28, 1882.-

- INVENTR.

ATTORNEYS.

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N. PETERS. Plmxu-Lixhegnphen wnshiugmnfnA Cy UNITED STATES PATENT OFFICE.

Noise-DEADENING INSULATOR.

SPECIFICATION forming part of Letters Patent No. 268,075, dated November 28, 1882,

Application filed June 26, 1882.

To all whom it may concern:

Beitknown that LGOUVERNEURMBEOWN, of Woonsocket, in the county of Providence and State of Rhode Island, have invented certain new and useful Improvements in Noise- Deadening Insulators; aud Ido hereby` declare that the following is a full, clear, and exact description of theinvention, which will enable others skilled in the art to which it appertains to make and use the same, reference beinghad to the accompanying drawings, which form a part of this specification.

Figure l is a perspective View of the plug detached, and Fig.2is a vertical sectional view taken through the insulator and plug.

Similar letters ot reference indicate corresponding parts in both figures.

This invention relates to insulators for telegraph-wires; and it consists in certain improvements in the construction ot" the same, which Will be hereinafter fully described, and particularly pointed ont in the claims.

In the drawings hereto annexed, A represents an insulator made in the ordinary welllrnown manner of glass, porcelain, or other suitable material, and provided in its under side with a deep recess or opening, B, which is screw-threaded, as shown. Insulators thus constructed are usually adjusted upon wooden pegs, projecting upward from the cross-bars of the telegraph-poles, after which the Wires are putin position. When moved or shaken by the wind or from other causes the wires, when thus supported, will emita peculiar disagreeable humming sound, which itis the object (No model.)

I of my present invent to prevent. rIhis I accomplish by using a plug, C, of india-rubber, screw-threaded upon its outer side, so as to iit in the opening B of insulator A, and having a recess, D, by which it may be adjusted upon the supporting-peg` E, which may in this case be made ot' iron. rIhe block (l is provided on each side with a thin vertical web, F, connecting the screw-threads G, and serving, when the block or plug U is adjusted in insulator A, as a packing, which ina-lies the connection tight and irm.

The operation of my invention isl obvious, the elastic block or plug interposed between the insulator and the supporting-peg serving to deaden the noise ofthe wires.

I claim and desire to secure by Letters Patent ot' the United Statesl. The rubber block C, haring recess D, screw-threads Gr, and vertical webs F connecting said threads, as and for the purpose set forth.

2. The combination of un insulator, A, having screw-threaded opening B, a supportingpeg, E,and an interposed rubber block or cushion having recess, D, screw-threads GA, and webs F, as and for the purpose set forth.

In testimony that I claim the foregoing as my own I have hereto at'xed my signature in presence ot'two witnesses.

GOUVERNEUR M. BHOVN.

Witnesses:

GEORGE A. WILEER, GEO. E. BREWER. 

